Trolley-base.



0. E. GIERDING.

TROLLBY BASE.

APPLICATION FILED MAR. 19, 1914.

1,131,831, Patented Mar. 16, 1915.

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CHARLES E. GIERDING, OF MANSFIELD, OHIO, ASSIGNOR T0 THE OHIO BRASS COMPANY,

OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

TROLLEY-BASE.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Original application filed March 5, 1913, Serial No. 752,043. Divided and this application filed. March 19,

'of which the following is a true, clear, and

exact specification.

My'invention relates to trolley bases of the type which are generally used upon electric cars and has more particular reference to improvements in trolley bases of this character which will render it convenient and easy to remove and replace or interchange trolley bases in case of damage and repairs and the like.

One of the objects of my invention is to provide an improved device of this charac ter which will be simple, durable, and reliable in construction and effective and efficient in operation.

Other objects of my invention will appear hereinafter.

Referring to the accompanying drawings, Figure 1 illustrates partly in section a trolley base embodying my invention. Fig. 2 is a horizontal sectional view on the line 22 of Fig. 1, and Fig. 3 is a bottom plan view of the base plate and locking device.

In the accompanying drawings 1 have illustrated my invention as embodied in a structure which in practice I have found best adaptable to various conditions and re quirements such as manufacturing and op erating conditions, but it will be obvious to one skilled in the art, after having obtained an understanding of my invention from the disclosures herein made, that my invention is equally as capable of embodiment in other structures without departing from the scope and-spirit thereof.

The structure shown in the drawings is of the type which is adapted for mounting upon the roof of the car and for maintaining the trolley in yielding relation to the trolley pole under such variations and conditions as are usually found in practice. This structure has a broad, flat base plate or member A provided with a number of bolt holes A preferably at the corners of said plate, permitting the base plate to be securely. fastened to the top of the car. Rising vertically from this base and preflow turret post or standard B, which is Serial No. 825,745.

circular in section and which serves as a central supporting member around which the several operating parts rotate in adapting themselves to the movements of the car relatively to the trolley wire. A hollow, inverted member C, which is also preferably circular in section, forms a turret or rotary member mounted to rotate upon the upstanding post or standard B. Suitable bearings, such as the vertically disposed roller bearings D, are interposed between the inner wall of the turret C and the periphery of the post B to reduce the friction incident to the rotary action of the turret. The structure which I have illustrated in the drawing is of the type conthe trolley pole in engagement with the trolley wire. The trolley pole (not shown) is fastened in the upper end or socket portion H of the fork and usually operates normally at an angle of about forty-five degrees to the horizontal. This trolley fork is pivoted upon a suitable shaft J mounted in hearings on the upper side of the turret C, so that the trolley fork with its pole may swing about its pivot under the influence of the spring mechanism F. The turret also carries a small hook or latch K which, when the trolley fork Ur and its pole are pulled down into a substantially horizontal position with respect to the top of the car, may be hooked over the edge L of the fork to lock the fork and pole in said horizontal position, this construction being provided to permit the trolley pole to be renewed or replaced in places such as car barns, where the head room is low. I have described these parts generally in order that an understanding may be had of the application of my present invention to a trolley base, but furtherdetails of said trolley base may be had by reference to the above mentioned co-pending application.

It will be noted that in the structure shown the parts are all mounted and arhappens that this operating unit becomes damaged to such an extent that it must be removed and replaced by another unit, or other condltlons may arise renderlng 1t necessary to remove or replace the operating unit. For these reasons I have constructed and arranged the parts so that the operating units and the base plates, with their upstanding standards, are interchangeable. .In other words, each car may be provided with a base plate and standard B, which may be permanently secured in position, these plates being all of a size so that the operating units may be interchangeably mounted in position. In order that the interchanging of the operating units may be quickly and conveniently accomplished under the usual conditions which generally arise in practice, I provide each turret C with a central bolt or member M. This bolt is firmly anchored at its upper end in the top of the turret and it extends downwardly through the hollow post or standard I? to a point preferably below the base plate A. The lower end of this bolt is expanded or has a head N, which is adapted to be engaged by the forked end 0 of a locking strip or member P. This locking strip is slidably mounted in a groove in the under side or face of the base plate A, as clearly shown in the drawing, so that it will lie flush with the bottom face of said base plate. The outer end B of this locking strip is upturned to provide a suitable handle for manipulating the strip. It will thus be seen that when the member P is shifted longitudinally so that its forked end 0 engages the headed end of the central bolt M the turret cannot be lifted off or removed from the standard or post B, but at the same time said locking member does not interfere in any manner with the rotation of the turret and the parts carried thereby. As a safeguard against accidental unlocking movement of this member P I provide a small screw or bolt S, which may be threaded through the plate A and into a suitably threaded hole in the locking member P, thereby holding said member P in its looking position. In order to remove the operating unit, it is simply necessary to unscrew the bolt S, slip the member P until its forked end frees the end of the central bolt M, and the entire operating unit may then be removed from the base plate. It will be noted that the bore of the bolt or standard B, through which the central bolt M extends, is of sufficient diameter to permit the head N of said bolt to pass through when the pole and operating unit is removed'or replaced.

I claim:

1. In a device of the class described, the combination of a base member, arotary trolley supporting member removably mounted thereon, and a locking device comprising a slidable forked member for engaging and holding said members in separable assembled position.

2; In apparatus of the class described, the combination of a base member, a rotary turret removably mounted thereon, and a locking device comprising a headed bolt and aslidable forked retainer to engage the head of the bolt for holding said turret in position.

3. In apparatus of the class'described, the combination of a base member having a turret post rising therefrom, a rotary turret removably mounted on said post, a headed bolt secured to the turret and a slidable retainer engaging the head of the bolt secured to said turret for preventing its displacement with respect to said post.

4. In apparatus of the class described, the V combination of a base member having an upstanding turret post, a turret embracing said post and rotatable thereon, a slidable retainer device mounted on said base, and means on said turret adapted to be engaged by said retainer for holding said turret in position.

5. In apparatus of the class described, the combination of a base member adapted to be fastened to the car and having a hollow turret post upstanding therefrom, a turret rotatably fitted thereon, a central shaft in said turret extending into said hollow post, and a locking device shiftable into engagement with said shaft for retaining the turret in position.

6. In apparatus of the class described, the combination of a base member having an upstanding hollow post, a rotary turret on said post, a headed bolt extending from said turret and a retainer device shiftably mounted on said base and having a forked end adapted to engage said bolt adjacent its head to prevent the removal of said turret.

7. In apparatus of the class described, the combination of a base member having an upstanding hollow post, a rotary turret on said post having a headed bolt extending centrally into said post, a retainer device shiftably mounted on said base and having a forked end adapted to engage said bolt adjacent its head to prevent the removal of said turret, and means for fastening said retainer in position.

8. In apparatus of the class described,the combination of a base member adapted to be secured to a support and having a hollow In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 13 day of March A. D. 1914.

CHARLES E. GIERDING.

Witnesses:

W. C. STARKEY, J NO. L. YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

